Circulatory System Flashcards
Blood composed of?
A connective tissue composed of plasma, liquid, water, salts, nutrients, toxins, gases
Red blood cell
Erythrocytes. Produced in the bone marrow. Lacks a nucleus. Contains a protein called hemoglobin.
Short life span
Hemoglobin
Binds and carries up to 4 molecules of oxygen. Gives the color of red. Contains iron
Oxygenated blood
Bright red color
Deoxygenated blood
Dark red color
Who collects old and damaged red blood cells?
Liver and spleen. Breaks down rbc to release iron. Blood carries iron back to the bone marrow where it is used to make more hemoglobin and packaged into a new rbc.
Blood vessels
Blood is delivered to all the tissues in the body by the blood vessels
Artery
Carries blood away from the heart. Thicker wall
Arteriole
Smaller artery
Circulatory system
Transports blood throughout the body and exchange of gases between the blood and tissues.
Vein
Carries blood to the heart. Thinner wall
Venule
Smaller vein
Capillary
Smallest blood vessel
Percentage of where blood is in the body
30% in arteries, 5% in capillaries and 65% in the veins
Aorta
Largest artery